MEI Pharma, a late-stage pharmaceutical company focused on advancing new therapies for cancer, and BeiGene, a commercial-stage biopharmaceutical company focused on developing and commercializing innovative molecularly-targeted and immuno-oncology drugs for the treatment of cancer, announced a clinical collaboration to evaluate the safety and efficacy of MEI’s ME-401, an investigational PI3K delta inhibitor, in combination with BeiGene’s zanubrutinib, an investigational BTK inhibitor, for the treatment of patients with B-cell malignancies.
Under the terms of the clinical collaboration agreement, MEI will amend its ongoing Phase 1b trial to include evaluation of ME-401 in combination with zanubrutinib in patients with B-cell malignancies. Study costs will be shared equally by the parties, and MEI will supply ME-401 and BeiGene will supply zanubrutinib. MEI will retain full commercial rights for ME-401 and BeiGene will retain full commercial rights for zanubrutinib.
ME-401 is an investigational oral phosphatidylinositol 3-kinase (PI3K) delta inhibitor; PI3K delta is often overexpressed in cancer cells and plays a key role in the proliferation and survival of hematologic cancer cells. ME-401 displays high selectivity for the PI3K delta isoform and has distinct pharmaceutical properties from other PI3K delta inhibitors. It is being clinically evaluated in patients with various B-cell malignancies. MEI is initiating a Phase 2 study to evaluate the efficacy, safety, and tolerability of ME-401as a single agent in patients with follicular lymphoma after failure of at least two prior systemic therapies including chemotherapy and an anti-CD20 antibody. The Phase 2 study is intended to support an accelerated approval marketing application with the U.S Food and Drug Administration.
Zanubrutinib (BGB-3111) is an investigational small molecule inhibitor of Bruton’s tyrosine kinase (BTK) that is currently being evaluated in a broad pivotal clinical program globally and in China as a monotherapy and in combination with other therapies to treat various B cell malignancies.
MEI Pharma is a San Diego-based pharmaceutical company focused on leveraging its extensive development and oncology expertise to identify and advance new therapies for cancer.
BeiGene is a global, commercial-stage, research-based biotechnology company focused on molecularly-targeted and immuno-oncology cancer therapeutics. With a team of over 1,300 employees in China, the United States, Australia and Switzerland, BeiGene is advancing a pipeline consisting of novel oral small molecules and monoclonal antibodies for cancer.